public class HolleWorld {
	public static void main(String []args) {
	 System.out.println("HelloWorld!");
	 int c= add(4,5);
	 System.out.println(c);
	 int d=minus(9,6);
	 float d1=minus(9,6);
	 System.out.println(d);
	 System.out.println(d1);
	}
	public static int add(int a , int b){
		int c =a+b;
		return c;
	}
	public static int minus(int e , int f){
		int d =e-f;
		return d;
	}
	public static float minus(float e , float f){
		float d =e-f;
		return d;
	}
}